22378454693 has 36 divisors (see below), whose sum is σ = 27661190508. Its totient is φ = 18045498240.

The previous prime is 22378454689. The next prime is 22378454701. The reversal of 22378454693 is 39645487322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3782496004 + 18595958689 = 61502^2 + 136367^2 .

It is not a de Polignac number, because 22378454693 - 2² = 22378454689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22378454093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1574105 + ... + 1588257.

It is an arithmetic number, because the mean of its divisors is an integer number (768366403).

Almost surely, 2^22378454693 is an apocalyptic number.

22378454693 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22378454693 is a deficient number, since it is larger than the sum of its proper divisors (5282735815).

22378454693 is a wasteful number, since it uses less digits than its factorization.

22378454693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14274 (or 14244 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 53.

The spelling of 22378454693 in words is "twenty-two billion, three hundred seventy-eight million, four hundred fifty-four thousand, six hundred ninety-three".